Regular MN user, NC for this because I'm so ashamed. Please be kind, I know I've not behaved well here.
I've been married to DH for 5 years now and he's a wonderful man - he's very kind, funny, intelligent and supportive of me. It's a very healthy relationship by all measures. We are not the 'rip each other's clothes off' type of couple, but we are very happy and have a lot of fun together.
Prior to meeting DH, I had a relationship with my ex, let's call him Tom. Tom and I had one of those very intense, passionate but unstable relationships, where it 'clicked' instantly but had a lot of ups and downs. We were both young and I ended it after one too many downs, mainly because Tom wasn't always very nice or emotionally available to me. I had other relationships after that but Tom and I were somehow drawn back together, and it still didn't work out. I suppose part of me thought the break wasn't permanent and we'd try again, but very soon after this I met DH and we've been together ever since.
DH and I have always been okay with keeping in touch with our exes. When I got married, Tom messaged me to congratulate me and we exchanged a few polite messages and that was that for ages. DH and I moved away so I stopped seeing Tom around but I dropped him a message after a while asking how he was doing and we got into a conversation which went on for a couple of weeks, not every day but a fair few messages here and there. In hindsight this conversation was a big mistake on my part. Although there was nothing inappropriate said and we lived far away from each other, it triggered memories and thoughts about him for me and I started feeling really weird and guilty about it. I don't know what Tom made of it - he had a girlfriend I knew about, talked to me like I was any old friend and the conversation stayed pretty light and impersonal. But because of the thoughts it triggered for me I felt very guilty and told my DH that I'd been having these conversations. I decided to pull back and took a few days to reply to a message, at which point Tom sent a message saying 'did you get bored of talking to me already?' with a row of silly emojis. I didn't reply to that right away and then noticed he'd blocked me.
I decided to send him an email asking why he'd blocked me and that I hoped we could still be friends. Again, not my smartest move in hindsight, but I was really hurt that he'd blocked me without warning and didn't understand why he'd done it. He never replied and it's been 3 years now since then and we've not had any contact. I know in that time he's gotten married and had a child.
Since that time, it's not much of an exaggeration to say that he's haunted me. I have periods where I don't think of him much but there are many periods where I do. I often have dreams about him and even worse than that, we've moved back to our home town and I've seen him around a couple of times, which has triggered a lot more memories. I recently found out that we work for the same large company now and I've felt so tempted to send him an email, though I absolutely will not humiliate myself like that. I just feel ridiculous and terrible for allowing him to occupy so much real estate in my head, like I'm cheating on DH even though we've not had any contact and likely never will again. I even feel like in a weird way I've never fully emotionally committed to DH because of this phantom image of another man I've carried for so long.
If you've gotten to the end of this, do you have any advice for me at all? I just want to forget him and focus on my wonderful DH. I hate carrying these feelings around but they just won't seem to die. Tom isn't even a nice person, he never really was, but the 'hold' he had over me clearly is very strong - it might be limerence, but whatever it is, I just want it to go away.